Satellite fire products have the potential to construct inter-annual time series of fire activity, but estimating area burned requires considering biases introduced by orbiting geometry, fire behavior, and the presence of clouds and smoke. Here we evaluated the performance of fire counts from the Advanced Thermal Scanning Radiometer (ATSR) for the boreal forest region using area burned information from other sources. We found ATSR detection rate varied between regions and different years, being higher during large fire years than during small fire years. The results show ATSR fire counts do not represent an unbiased sample of fire activity, and independent validation may be required prior to using this data set in studies of global emissions from biomass burning. INDEX TERMS: 0305 Atmospheric Composition and Structure: Aerosols and particles (0345, 4801); 0315 Atmospheric Composition and Structure: Biosphere/ atmosphere interactions; 0933 Exploration Geophysics: Remote sensing. Citation: Kasischke, E. S., J. H. Hewson, B. Stocks, G. van der Werf, and J. Randerson, The use of ATSR active fire counts for estimating relative patterns of biomass burning – a study from the boreal forest region, Geophys. Res. Lett., 30(18), 1969, doi:10.1029/2003GL017859, 2003.
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